 Prior to 1992, the 8th congressional district included the cities of Saginaw and Bay City as well as Huron, Tuscola and Sanilac Counties in the Thumb of Michigan, Arenac county north from Bay County, a total of about half the area of Saginaw County, and small northern portions of Lapeer and St. Clair counties.This area would largely be transferred to the 5th district after the 1990 census, while most of the old 6th district became the 8th district.Unlike the old 6th district, the 8th did not include Pontiac.